Space-time structure of optical flashes and ionization changes produced by lighting-EMP

Authors


Abstract

Intense electromagnetic pulses (EMPs) released by lightning discharges produce bright optical emissions at 80–95 km altitudes emitted in a thin (∼30 km) cylindrical shell expanding to radial distances of up to >150 km, lasting for ∼400 µs, and appearing in limb-view as a thin layer with ∼400 km lateral extent.

Ancillary